Preparation method of antibacterial fresh-keeping and edible coating liquid for eggs

The invention discloses a preparation method of antibacterial fresh-keeping and edible coating liquid for eggs, and can solve the problems of poor antibacterial property, poor water barrier property and the like of traditional coating liquid. The fresh-keeping coating liquid is mainly composed of water, chitosan, beeswax and basil essential oil, wherein the mass fraction of the chitosan is 2%, the mass fraction of the beeswax is 5%, the concentration of the basil essential oil is 0.5-1.5%, and the balance is water. The fresh-keeping coating liquid can seal pores in the surfaces of eggshells, reduce gas and water exchange inside and outside the eggshells, inhibit microorganisms on the surfaces of the eggshells and prevent the microorganisms from permeating inwards through the pores to pollute contents. The weight loss ratio of the coated eggs is remarkably reduced; the Hough unit, yolk index and egg white pH of the eggs can be kept within a good range; a good fresh-keeping effect on the eggs in the storage per